mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-19 05:38:00 +00:00
35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
|
From 2dee5238a25d0d7f27cbccd68b7e1d3fa16edcc8 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
||
|
|
Date: Tue, 5 May 2020 19:45:41 +0100
|
||
|
|
Subject: [PATCH 0211/1085] video: bcm2708_fb: Disable FB if no displays found
|
||
|
|
|
||
|
|
If the firmware hasn't detected a display, the driver would assume
|
||
|
|
one display was available, but because it had failed to retrieve the
|
||
|
|
display size it would try to allocate a zero-sized buffer.
|
||
|
|
|
||
|
|
Avoid the allocation failure by bailing out early if no display is
|
||
|
|
found.
|
||
|
|
|
||
|
|
See: https://github.com/raspberrypi/linux/issues/3598
|
||
|
|
|
||
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
||
|
|
---
|
||
|
|
drivers/video/fbdev/bcm2708_fb.c | 5 ++---
|
||
|
|
1 file changed, 2 insertions(+), 3 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/video/fbdev/bcm2708_fb.c
|
||
|
|
+++ b/drivers/video/fbdev/bcm2708_fb.c
|
||
|
|
@@ -1092,10 +1092,9 @@ static int bcm2708_fb_probe(struct platf
|
||
|
|
* set one display
|
||
|
|
*/
|
||
|
|
if (ret || num_displays == 0) {
|
||
|
|
- num_displays = 1;
|
||
|
|
dev_err(&dev->dev,
|
||
|
|
- "Unable to determine number of FB's. Assuming 1\n");
|
||
|
|
- ret = 0;
|
||
|
|
+ "Unable to determine number of FBs. Disabling driver.\n");
|
||
|
|
+ return -ENOENT;
|
||
|
|
} else {
|
||
|
|
fbdev->firmware_supports_multifb = 1;
|
||
|
|
}
|